ChangeNotifierAdapter class

Drives an Animate animation from a ChangeNotifier. The valueGetter should provide a value in the range 0-1 when a change occurs.

See Adapter for information on direction and animated.

This example creates a ChangeNotifierAdapter that fades in the myIcon widget based on the progress of the myProgressNotifier ChangeNotifier. The valueGetter is called whenever myProgressNotifier changes, and returns a position value between 0-1, calculated from the loaded and total properties of myProgressNotifier.

myIcon.animate(
  adapter: ChangeNotifierAdapter(
    myProgressNotifier,
    () => myProgressNotifier.loaded / myProgressNotifier.total,
  )
).fadeIn();

Inheritance

• Object
• Adapter
• ChangeNotifierAdapter

Constructors

ChangeNotifierAdapter(ChangeNotifier notifier, ValueGetter<double> valueGetter, {bool? animated, Direction? direction})

Properties

animated → bool

final, inherited

direction → Direction?

final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

notifier → ChangeNotifier

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

valueGetter → ValueGetter<double>

final

Methods

attach(AnimationController controller) → void

override

config(AnimationController controller, double value, {ChangeNotifier? notifier, VoidCallback? listener}) → void

inherited

detach() → void

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

updateValue(double value) → void

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited